Automobile-brake.



G. TODD.

AUTOMOBILE BRAKE.

APPLIGATION FILED JUNE 25, 1909.

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@d Witnesses I t I I mm? ANDREW a GRAHAM 00,, vnwwumoanwmns. wlsmnm'on.u. c.

G. TODD. AUTOMOBILE BRAKE. APPLICATION FILED JUNE 25, 1909;

937,557. Patented 001;. 19,1909.

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vwemtov Wihwooeo CLYDE TODD, OF PITTSBURG, PENNSYLVANIA.

AUTOMOBILE-BRAKE.

Specification of Letters Patent.

Application filed June 25, 1909.

Patented Oct. 19, 1909.

Serial no. 504,304.

To all whom'it may concern:

Be it known that I, CLYDE Tom, a citizen of the United States ofAmerica, residing at Pittsburg, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements inAutomobile-Brakes, of which the following is a specification, referencebeing had therein to the accompanying drawing.

This invention relates to automobile brakes, and the invention has forits object to provide an automobile or a similar motor driven vehiclewith a novel brake that will frictionally engage the surface over whichthe automobile passes and retard the motion of said automobile andeventually cause a cessation in the operation of the same.

The above object is attained by'providing an automobile with roadgripping wheels or shoes adapted to be lowered into engagement with aroad for retarding the movement of an automobile, without subjecting anyof the operable parts of the machine to undue stresses and strains.

The automobile brake will be hereinafter considered in detail and thenclaimed, and reference will now be had to the drawings forming a part ofthis specification, wherein there is illustrated a preferred embodimentof the invention; but it must be understood that the structural elementsthereof can be varied or changed without departing from the spirit ofthe invention.

In the drawings :Figure 1 is an elevation of an automobile showing thebrake wheels'or shoes in an elevated position, Fig. 2 is a plan of therunning gear or frame of the automobile, Fig. 3 is a side elevation of aportion of the automobile with the brake wheels or shoes in a loweredposition, and, Fig. 1 is a cross sectional view of the automobileillustrating the brake mechanism.

To put my invention into practice, I provide the longitudinal frames 1and 2 of the machine with hangers 3 for a transverse rock shaft 1. Fixedupon this shaft is a crank 5 which is connected by a rod 6 to a crank7*, carried by a shaft 7", revolubly supported by a hanger 8, carried bythe frame 2. The shaft 7 is provided with a lever 7 which is providedwith a clutch mechanism 9 for locking the lever 7 in a fixed position,said clutch mechanism engaging a toothed sector or rack 10, carried bythe frame 2 adjacent to the drivers seat of v the machine. Thetransverse shaft 4: is provided with two depending cranks 11 andrevolubly mounted in the lower ends of said cranks is a shaft 12, saidshaft having the ends thereof provided with spacing toothed wheels 18,similar to gear-wheels, these toothed wheels are adapted to engagesimilar wheels 14 mounted upon the rear axle 15 of the machine. Theshaft 12 is provided with a central depending link 16, said link beingloosely connected to the shaft, while the lower end thereof is looselyconnected to a shaft 17 journaled in the bifurcated ends 18 of hangers20 loosely mounted upon the axle 15. Mounted upon the shaft 17 in thebifurcations of the hangers 20 are toothed brake wheels or shoes 21adapted to engage the road or surface over which the machine travels.The toothed spacing wheels 13 are employed to limit the movement of thehangers 20 and prevent the toothed brake wheels 21 from being swungrearwardly beneath the axle 15, to that extent as to cause an abruptstop of the vehicle.

It is apparent that when the lever. 7 is swung forward by the driver oroperator of the machine that the toothed brake wheels or shoes areimmediately thrown into engagement with the road or street over whichthe automobile is traveling, and these wheels or shoes will be preventedfrom being accidentally injured or stripped of their teeth, while thebrake power considerably depends upon the position of the lever 7 and towhat extent the same is forced forwardly.

The braking mechanism as herein described is applicable to various typesof motor driven vehicles and in its entirety is constructed of strongand durable metal.

Having now described my invention what I claim as new, is

1. In an automobile brake, the combination with the longitudinal framesand rear axle of the automobile, and toothed wheels mounted upon saidaxle, of a transverse rock shaft carried by said frames, an operatinglever carried by one of said frames for rocking said shaft, crankscarried by said rock shaft, a shaft journaled in said cranks, spacingwheels mounted upon said shaft and adapted to engage the toothed wheelsof said axle, a link loosely connected to said shaft, bifurcated hangersloosely mounted upon said axle, a shaft journaled in said link and saidhangers, and toothed Wheelsor shoes mounted upon said shaft in thebifurcations of said hangers.

2. In an automobile brake, the combination with the longitudinal framesand rear axle of the automobile, of a rock shaft supported by saidframes, an operating lever carried by one of said frames for rockingsaid shaft,

a shaft revolubly supported by said rock" I 10 shaft, spacing Wheelscarried bysaid shaft,

bifurcated; hangers loosely mounted uponv said: axle, toothed brakingWheels revolubly' mounted in the bifurcations of said hangers,

ering said hangers by an actuation of' said rock shaft.

In testimony whereof I aflix my signature in the presence of twoWitnesses.

CLYDE TODD.

Witnesses H. C. EVERT; A. J. \TRIGG'.

